时间标签：数据日期 2026-10-31 · 生成时间 2026-11-01 05:30（Asia/Shanghai）｜ 检索窗口 PubMed edat 2026/10/28–2026/10/31 ｜ 情报发生日期 2026-10-31
研究问题
Despite intensive chemotherapy, hypomethylating agents, venetoclax-based regimens and targeted inhibitors, long-term survival remains unsatisfactory, particularly in older and relapsed/refractory (R/R) patients, because minimal residual disease and leukemia stem cells (LSCs) survive treatment and drive relapse.；A central caveat, however, is that the evidence in AML is considerably stronger for autophagy and HSP70 than for a specific BAG3-HSP70/CASA dependency.；Here we first summarize BAG3-HSP70 structure and define the distinctions between the principal autophagy pathways, then provide an inventory of the direct evidence for BAG3 in AML and critically evaluate, with explicit four-tier evidence grading and a careful separation of autophagy induction from flux, the proposed roles of the axis at each autophagy stage and its stage-dependent duality (), its crosstalk with FLT3-ITD, NPM1 and T
方法
（全文无独立方法节，正文亦未给出可抽取的实验动作句）
核心结论
Acute myeloid leukemia (AML) arises from the malignant transformation of hematopoietic stem or progenitor cells and is defined by the clonal expansion of immature myeloid blasts.；Its role in cancer is dual and context dependent: it can suppress early tumorigenesis yet support established tumors under metabolic, hypoxic or therapeutic stress.；BAG3 is a stress-inducible co-chaperone and nucleotide exchange factor for HSP70 that, together with HSPB8, HSP70, CHIP and p62, nucleates the CASA machinery and also scaffolds several signaling complexes (; ). ‖ 结论：We therefore state as a principal conclusion that direct BAG3 coupling to ULK1, competitive BAG3/HSP70 binding at the Beclin1 BH3 domain, and direct HSP70 shielding of ATG5 from cleavage are unsupported and are more accurately framed as untested or tissue-specific hypotheses (Tier D); NPM1-linked autophagy is presently independent of demonstrated BAG3 involvement, and the TP53 connection is hypothesis-generating ().
局限
A critical reading under the four-tier framework gives a clear result: direct AML evidence is comparatively strong for the cytoprotective, mitophagic and chemoresistance roles of autophagy and HSP70 in established and therapy-stressed LSCs, and for FLT3-ITD- and NPM1-linked autophagy, but it does not establish a specific BAG3 dependency.；Three priorities should guide future work.
对本项目的价值
★☆☆☆☆ 营养感知与自噬轴决定「干预窗口 + 剂量方案」，是组合疗法的时间锚。
全文来源
PMC JATS 全文（正文 39,946 字符，已过标题/DOI 逐字归属校验）
原文题录
- 英文标题：Research progress on the BAG3-HSP70 axis-mediated autophagy in acute myeloid leukemia.
- 期刊与标识：Front Cell Dev Biol · PMID 42953017 · DOI 10.3389/fcell.2026.1980188
A 级证据分级：A 级（同行评议人体研究）
本文属人体研究证据，但需注意：观察性或小样本干预的结论不等于已证实临床获益；效应量与长期安全性仍需更大规模、更长随访的试验验证。
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